Steajvj-engine governor



(Nomade-a1.) 2 sheets-sheen 1.

A. L. DB,

STEAM ENGN-E GOVERNOR. No. 801,720. Patented July 8, 1884.

(No Model.) .2 sheets-sheet 2.

A. L. IDB. y

STEAM ENGINE GOVERNOR.

No. 301,720. Patented July 8, 1884.

Tio

N. PzfiRs. mlowwgnahvzr. wan

NrrEn S'rAfrEsl ALBERT L. IDE, or sPErNGErELniLLiNois.

STEAM-ENGINE GOVERNOR.

SPECIPCATION forming part Of Letters Ptenl'. NO. 301,720, dated July 8,1884-.

Application nieu ,nur 11, iss. (No model.)

Zo #El whom, t may concern,.-

Be it known that I, ALBERT L. IDE, of Springfield, in the county ofSangamon and State of Illinois, have invented certain new and usefulImprovements in Steaii'i-Engiiie Governors; and `I do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to theaccompanying` drawings, and` to the letters ofreference marked thereon, which form a part of this specification.

This invent-ion relates to that class of stean1- engine governors knownas fly-Wheel governors, and has for its primary obj ect to provide meansfor holding the eccentric steadily in its proper poised position, inopposition to the tendency of certain extraneous forces which arecalculated to disturbthe 1novements of the valve, as sought to bedetermined by the `balanced forces of Weights and springs when theengine is in motion.

To this end the invention consists in the combination of a dash-pot withthe governor and pulley, said dash-pot connected with a fixed and amovable part, or with two relatively or unequally movable parts-as, forexample, With the extremity of a Weight-lever and the pulley/"hub,

In this class of governors the position of the eccentric is variablydetermined by the oppos- `ing and self-balancing forces exerted by thecentripetallyncting spring or springs and the centrifugally-actingweight or weights connected with said springs, the intention being tohold the eccentric permanently in a certain poised position for a givenspeed ofthe wheel to which the governor. is applied, and to vary theposition oi' the eccentric exactly as the speed of said wheel is varied.There are, however, certain temporarily-acting causes of disturbancecalculated to change the position of the eccentric independently ot' thespeed of the wheel. The principal of these disturbing causes is theinertia of the rcciprocati n g parts, including the eccentric and theparts actuated thereby; anda secondary cause is the gravity oftheeccentric when not couuterbalanced by some special device for thepurpose. At a regular and very high speed of the governor wheel orpulley these disturbing` 'forces operate but slightly, owing to themomentum of ,theweights which serve to prevent their deilection from aregular course; but at lower speeds than that at which the apparatus isadjusted torun, and particularly inaccelerating or ret-arding theengine, as in start-ing up or slowing down, these incidental disturbingforces interfere materially With the valve action and give anobjectionable irregularity to the movements of the Weights. au engineused for running a dynamo for electric-lighting purposes, and subject tosudden and wide ch anges in requisitions of power and speed, the effectsof the disturbances referred to manifest themselves also in the qualit-yor intensity of the lights. A dash-pot constructed and attached to theapparatus in such manner as to prevent sudden movements of theweight-levers or of thei eccentric is found in practice to Whollyovercome the defects indicated and to give a desirable steadiness andregularity to the movements of the 'movable' Yparts of the governor, aswell as accuracy and reliability to the cutoff action of the Valve.

The improvement will be understood from the following description andaccompanying drawings,

y In said drawings, Figure lis a side elevation of a pulley providedwith a governor having my improvement,the dash-pot being shown in axialsection. Fig. 2 is a section of the pulley in the indirect line a: .frof Fig. 1. Fig. 3 is a section of the pulley and other parts in theindirect line 1/ y of Fig. l. Fig. ai is a fragmentary section of thepulley 'and other parts in the line z c ol" Fig. l.

In the case of 6o A is a pulley or wheel having arms c c, and

secured by its central hub to the shaft B.

C is an eccentric having the slot or opening c, by which itniovablyembraces the shaft B; and l) is an arm attached to the eccentric andsupporting it from the body of the pulley by a pivot-pin at d.

S is the eccentric-strap, applied in any approved nianner to the'eccentric and joined vwith the valve-rod R.

E E are two upright levers, fulcruined at c e to opposite points on thepulley A, and E E are the Weights applied adjustably as to theirposition to said levers. rlhe Weightlevers project in oppositedirections from their pivotal points, so that the weights E' lOOthereon, when properly located, stand at diametrically opposite pointsof the pulley and counterbalance each other. One ofthe levers E isextended beyond its fulcrum e by the short arm e. To the extremity ofthis arm c', and to the opposite lever E, at a point inward an equaldistance from the fulcrum, are pivoted the outer ends of connecting-rodsG G, whose inner ends are pivotally joined to the eccentric C,preferably by a common pin, g, to a lug, G, located on the eccentric ata point opposite the supporting-arm D, said rods G' being arrangedsubstantiallyin line with each other and atri'ghtangleswithsaidsupporting-arm. Near the free extremities of the levers E E, and atpointsequally distant from their fulera, coiled springs F F areconnected therewith, and the opposite ends of said springs are attachedto suitable points on the pulley. In this constructionV the equalweights E evidently counprovided at its closed end with a lug, h', by.

which lit is pivotally connected either with the pulley, the eccentric,or one of the rods G. As here illustrated, it is connected with a rod,G. Said dash-pot cylinder has at its open end a close-tting cap, h2,through a central stuffing-box, h3, on which passes the piston-rod'H.The outer end of this rod is pivotally connectedwith the end of one ofthe weight-levers E, and its inner end is provided with a piston, H2,fitted to the interior of the cylinder 7L, and apertured at h4. Thecylinder of the dash-pot is l filledA with glycerine or some othernoncompressible liquid, preferably one that is also not congealable at atemperature to which 4o the engine is likely to be exposed. By means ofthe dash-pot applied to the relatively movable and stationary parts orto the unequallymoving parts, as described, wide and sudden radialmovements of the weights E are prevented, and as a consequence thegovernor will have a steady and efficient action at all speeds of thepulley or wheel to which said. governor is applied. The aperture l1,4will be made of such size (according, of course, with 5o the size of thecylinder, springs, and weights) as to allow all necessary promptne'ss ofaction on the part of the governor, and said aperture may, if desired,be made adjustable to its size by ordinary and well-known means for thepurpose.

The dash-pot, while preferably connected with the end of the lever E,may obviously be attached to the eccentric itself and to a iixed or lessmovable part of the apparatus. 6o

By the term dash-'pot77 in the appended claim I mean the devicetechnically known by that name-usually comprising a closed cylinder, apiston havinga passage through or around it, land a fluid confined inthe cylin- 6 5 der, as shown-or its equivalent.

l claim as my invention- In a ily-wheel governor, the combination, withrelatively-movable parts, of a dash-pot, substantially as described. p7o In testimony thatI claim the foregoing as my invention I affix mysignature in presence of two witnesses.

ALBERT L. IDE.

Witnesses:

J F. BUNN, CHAs. A.4 ORR.

